| article html file updated | 7 February 2020 08:59 CET | Update | https://www.mdpi.com/1999-4893/9/2/34 |
| article html file updated | 5 May 2019 15:14 CEST | Update | N/A |
| article html file updated | 27 March 2019 05:14 CET | Update | N/A |
| article html file updated | 27 June 2016 12:15 CEST | Update | N/A |
| article html file updated | 20 May 2016 11:56 CEST | Update | N/A |
| article xml uploaded. | 20 May 2016 11:54 CEST | Update | https://www.mdpi.com/1999-4893/9/2/34/xml |
| article pdf uploaded. | 20 May 2016 11:54 CEST | Updated version of record | https://www.mdpi.com/1999-4893/9/2/34/pdf |
| article html file updated | 20 May 2016 09:17 CEST | Original file | N/A |
